Disk drive including perpendicular magnetic recording system...

Details Disk drive including perpendicular magnetic recording system... Disk drive including perpendicular magnetic recording system...

2005-03-29

2005-03-29

Tran, Sinh (Department: 2651)

Dynamic magnetic information storage or retrieval

General processing of a digital signal

Data clocking

C360S045000

Reexamination Certificate

active

06873484

ABSTRACT:
There is disclosed a disk drive of a perpendicular magnetic recording system including a write compensator against magnetic disturbance. The write compensator estimates strength and direction of the magnetic disturbance based on the detection result of the magnetic disturbance from a magnetic sensor during a write operation. The write compensator executes write compensation in accordance with the direction of the magnetic disturbance and the recording magnetization direction on a disk medium.

REFERENCES:
patent: 5187622 (1993-02-01), Watanabe
patent: 5724336 (1998-03-01), Morton
patent: 20020034029 (2002-03-01), Aoyagi et al.
patent: App 3-44809 (1991-02-01), None
patent: 2000-207704 (2000-07-01), None

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